MPASM, PIC18F65K22: Check if one number is greater than another?

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treez

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Hello,
I am coding in MPASM (microchip) for PIC18F65K22.

I have numbers contained in two registers,
One is called ana8, the other is called max_led_temp.

I wish to find out if the value in ana8 is greater than the value in max_led_temp.
Can I do this by subtracting ana8 from max_led_temp and checking if the Carry flag of the status register is set?…eg

Code ASM - [expand]
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movf    ana8,w
bcf     STATUS,C
subwf   max_led_temp,w
btfsc   STATUS,C
goto    overtemp


(the numbers in either register may be between 0 and 255)
 
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yes, that is the way to do it.
There is another possible outcome you might also want to check, that the two values are equal. The Z flag will tell you that.

Brian.
 
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